Question: When was Muḥammad ibn Mūsā al-Khwārizmī born in the year 780?
Paraphrase: which was muhammad ibn musa al-khwarizmi born in the year 780?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q9038 p:P569 ?s . ?s ps:P569 ?x filter(contains(?x , '780-1-1')) . ?s pq:P1480 ?value}